Barrow, Isaac
,
Lectiones opticae & geometricae : in quibus phaenomenon opticorum genuinae rationes investigantur, ac exponuntur: et generalia curvarum linearum symptomata declarantur
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cùm eum tunc reflexi convergentes appellant; </
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<
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">& </
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<
s
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xml:space
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">imago diſtinctior Z
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poſt oculum conſiſtat. </
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<
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xml:space
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bitisipſi ſi lubet, & </
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<
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<
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<
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_ſit ipſum pervadens reflexus_ (ceu N π) è ſuprà tractatis aliquatenus
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adparet. </
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<
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xml:space
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">nec inibi generaliùs expoſitum _Problema_ libet h@c repo-
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nere.</
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<
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<
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PN in E; </
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<
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<
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">radiantis imaginem, visûs O reſpectu, circa punctum Z conſiſtere. </
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planè ſimilis eſt diſcurſus, quorſum κικζ@‖</
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<
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paucula ſubdamus. </
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incidens cavo GB γ radius ipsâ AC minor erit; </
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<
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AN reflexus N π; </
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& </
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in L; </
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<
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flectente ſumendo) reflexi concurſus habent a ſe minoribus intervallis
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diſjunctos. </
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tis conformia, vel agnata perſimili quoque quoad hunc caſum metho-
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do comprobantur. </
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que præcipuum etiam hîc exertiùs oſtendam; </
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ſequentia quoque concidenda non inutili, _Lemmatio:_</
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velut Z; </
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Id facilè ſic exequimur.</
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